Trial Outcomes & Findings for Safety and Efficacy Study of WRSS1, a Shigella Sonnei Vaccine Candidate (NCT NCT01080716)

NCT ID: NCT01080716

Last Updated: 2018-11-13

Results Overview

Overview of AEs highlighting all AEs, withdrawals and deaths related to AEs

Recruitment status

COMPLETED

Study phase

PHASE1/PHASE2

Target enrollment

30 participants

Primary outcome timeframe

Up to 12 months

Results posted on

2018-11-13

Participant Flow

Volunteers were recruited by contacting people from a list of potential volunteers from previous studies, by friend to friend contact, by internal announcement or by presentation booth in the university, community or blood donor sites. Recruitment and screening was performed by the staff at the Vaccine Trial Center, Mahidol University.

Part 1 - total of 20 volunteers (14 vaccinees and 6 controls) Part 2 - was started approximately 60 days after WRSS1 vaccination. 10 vaccinees from part 1 and 10 naïve controls

Participant milestones

Participant milestones
Measure
Arm 1: WRSS1 Vaccine
WRSS1 is a live attenuated S. sonnei vaccine candidate derived from the Mosely strain of S. sonnei
Arm 1: Placebo Vaccine
Placebo comparator
Arm 2: S. Sonnei 53G
10 volunteers from Study Arm 1/Part 1 (WRSS1 vaccine) given S. sonnei 53G
Arm 2: S. Sonnei 53G (Naive Subjects)
10 naïve controls given S. sonnei 53G
Part 1
STARTED
14
6
0
0
Part 1
COMPLETED
13
6
0
0
Part 1
NOT COMPLETED
1
0
0
0
Part 2
STARTED
0
0
10
10
Part 2
COMPLETED
0
0
10
10
Part 2
NOT COMPLETED
0
0
0
0

Reasons for withdrawal

Reasons for withdrawal
Measure
Arm 1: WRSS1 Vaccine
WRSS1 is a live attenuated S. sonnei vaccine candidate derived from the Mosely strain of S. sonnei
Arm 1: Placebo Vaccine
Placebo comparator
Arm 2: S. Sonnei 53G
10 volunteers from Study Arm 1/Part 1 (WRSS1 vaccine) given S. sonnei 53G
Arm 2: S. Sonnei 53G (Naive Subjects)
10 naïve controls given S. sonnei 53G
Part 1
Physician Decision
1
0
0
0

Baseline Characteristics

1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Part 1/Arm 1 of Study: WRSS1 Vaccine
n=13 Participants
WRSS1 is a live attenuated S. sonnei vaccine candidate derived from the Mosely strain of S.sonnei Part 1/Arm 1 of Study: WRSS1 vaccine: Single, oral dose of WRSS1
Part 1/Arm 2 of Study: Placebo Vaccine
n=6 Participants
Placebo comparator
Part 2/Arm 1 of Study: S. Sonnei 53G
n=10 Participants
10 volunteers from Study Arm 1/Part 1 (WRSS1 vaccine) given 53G S. sonnei
Part 2/Arm 2 of Study: S Sonnei 53G (Controls)
n=10 Participants
10 subjects (naïve controls) given S. sonnei 53G
Total
n=39 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
Age, Categorical
Between 18 and 65 years
13 Participants
n=5 Participants
6 Participants
n=7 Participants
10 Participants
n=5 Participants
10 Participants
n=4 Participants
39 Participants
n=21 Participants
Age, Categorical
>=65 years
0 Participants
n=5 Participants
0 Participants
n=7 Participants
0 Participants
n=5 Participants
0 Participants
n=4 Participants
0 Participants
n=21 Participants
Sex: Female, Male
Female
8 Participants
n=5 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
3 Participants
n=7 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
5 Participants
n=5 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
2 Participants
n=4 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
18 Participants
n=21 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
Sex: Female, Male
Male
5 Participants
n=5 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
3 Participants
n=7 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
5 Participants
n=5 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
8 Participants
n=4 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
21 Participants
n=21 Participants • 1 subject withdrawn due to diarrhea and mucus in stool prior to vaccination
Region of Enrollment
Thailand
13 participants
n=5 Participants
6 participants
n=7 Participants
10 participants
n=5 Participants
10 participants
n=4 Participants
39 participants
n=21 Participants

PRIMARY outcome

Timeframe: Up to 12 months

Overview of AEs highlighting all AEs, withdrawals and deaths related to AEs

Outcome measures

Outcome measures
Measure
Part 1/Arm 1 of Study: WRSS1 Vaccine
n=13 Participants
WRSS1 is a live attenuated S. sonnei vaccine candidate derived from the Mosely strain of S.sonnei Part 1/Arm 1 of Study: WRSS1 vaccine: Single, oral dose of WRSS1
Part 1/Arm 2 of Study: Placebo Vaccine
n=6 Participants
Placebo comparator
Part 2/Arm 1 of Study: S. Sonnei 53G
n=10 Participants
10 volunteers from Study Arm 1/Part 1 (WRSS1 vaccine) given 53G S. sonnei
Part 2/Arm 2 of Study: S Sonnei 53G (Controls)
n=10 Participants
10 subjects (naïve controls) given S. sonnei 53G
Number of Participants With Adverse Events
All Serious Adverse Events
0 Participants
0 Participants
0 Participants
0 Participants
Number of Participants With Adverse Events
All Adverse Events
9 Participants
5 Participants
8 Participants
10 Participants
Number of Participants With Adverse Events
Withdrawals Due to Adverse Events
0 Participants
0 Participants
0 Participants
0 Participants
Number of Participants With Adverse Events
Deaths
0 Participants
0 Participants
0 Participants
0 Participants

PRIMARY outcome

Timeframe: 0-5 days

Population: Number of participants in vaccine and controls following the challenge who experienced one or more clinical disease criteria

Study Part 2-Frequency of Shigella induced clinical disease defined as one or more of diarrhea, dysentery or fever in vaccinees and controls following challenge with S. sonnei 53G. Transmissibility of disease will be evaluated by the presence of fecal shedding in control subjects.

Outcome measures

Outcome measures
Measure
Part 1/Arm 1 of Study: WRSS1 Vaccine
n=10 Participants
WRSS1 is a live attenuated S. sonnei vaccine candidate derived from the Mosely strain of S.sonnei Part 1/Arm 1 of Study: WRSS1 vaccine: Single, oral dose of WRSS1
Part 1/Arm 2 of Study: Placebo Vaccine
n=10 Participants
Placebo comparator
Part 2/Arm 1 of Study: S. Sonnei 53G
10 volunteers from Study Arm 1/Part 1 (WRSS1 vaccine) given 53G S. sonnei
Part 2/Arm 2 of Study: S Sonnei 53G (Controls)
10 subjects (naïve controls) given S. sonnei 53G
Number of Participants With Shigella Induced Clinical Disease in Part 2
Headache · Yes
2 Participants
1 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Headache · No
8 Participants
9 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Meet Criteria of Clinical Disease · No
7 Participants
7 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Meet Criteria by External Review · Yes
3 Participants
6 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Meet Criteria by External Review · No
7 Participants
4 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Shedding S.sonnei (Fecal) · Yes
6 Participants
7 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Shedding S.sonnei (Fecal) · No
4 Participants
3 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Diarrhea · Yes
1 Participants
1 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Diarrhea · No
9 Participants
9 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Dysentery · Yes
2 Participants
2 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Dysentery · No
8 Participants
8 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Fever · Yes
1 Participants
2 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Fever · No
9 Participants
8 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Abdominal Pain · Yes
1 Participants
2 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Abdominal Pain · No
9 Participants
8 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Tenesmus · Yes
1 Participants
2 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Tenesmus · No
9 Participants
8 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Nausea · Yes
1 Participants
1 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Nausea · No
9 Participants
9 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Vomiting · Yes
0 Participants
1 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Vomiting · No
10 Participants
9 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Myalgia · Yes
2 Participants
2 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Myalgia · No
8 Participants
8 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Joint Pain · Yes
0 Participants
0 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Joint Pain · No
10 Participants
10 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Dizziness · Yes
2 Participants
2 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Dizziness · No
8 Participants
8 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Anorexia · Yes
1 Participants
1 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Anorexia · No
9 Participants
9 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Malaise · Yes
3 Participants
2 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Malaise · No
7 Participants
8 Participants
Number of Participants With Shigella Induced Clinical Disease in Part 2
Meet Criteria of Clinical Disease · Yes
3 Participants
3 Participants

SECONDARY outcome

Timeframe: Days 1, 7, 14, and 28

Population: Count of subjects in Parts 1 and 2 with normal and abnormal clinical laboratory values after samples taken on days 1, 7, 14, and 28. Abnormal lab values are determined clinically significant by the PI. Results were not presented per arm in the FCSR, but were instead presented as parts 1 and 2 of the study.

Count of subjects in Parts 1 and 2 with normal and abnormal clinical laboratory values after samples taken on days 1, 7, 14, and 28. Abnormal lab values are determined clinically significant by the PI

Outcome measures

Outcome measures
Measure
Part 1/Arm 1 of Study: WRSS1 Vaccine
n=20 Participants
WRSS1 is a live attenuated S. sonnei vaccine candidate derived from the Mosely strain of S.sonnei Part 1/Arm 1 of Study: WRSS1 vaccine: Single, oral dose of WRSS1
Part 1/Arm 2 of Study: Placebo Vaccine
n=20 Participants
Placebo comparator
Part 2/Arm 1 of Study: S. Sonnei 53G
10 volunteers from Study Arm 1/Part 1 (WRSS1 vaccine) given 53G S. sonnei
Part 2/Arm 2 of Study: S Sonnei 53G (Controls)
10 subjects (naïve controls) given S. sonnei 53G
Count of Subjects With Normal and Abnormal Clinical Laboratory Values During Parts 1 and 2 of Study
Not Clinically Abnormal
20 Participants
19 Participants
Count of Subjects With Normal and Abnormal Clinical Laboratory Values During Parts 1 and 2 of Study
Clinically Abnormal
0 Participants
1 Participants

Adverse Events

Part 1/Arm 1 of Study: WRSS1 Vaccine

Serious events: 0 serious events
Other events: 9 other events
Deaths: 0 deaths

Part 1/Arm 2: Placebo

Serious events: 0 serious events
Other events: 5 other events
Deaths: 0 deaths

Part 2/Arm 1 of Study: S. Sonnei 53G

Serious events: 0 serious events
Other events: 8 other events
Deaths: 0 deaths

Part 2/Arm 2 of Study: S Sonnei 53G (Controls)

Serious events: 0 serious events
Other events: 10 other events
Deaths: 0 deaths

Serious adverse events

Adverse event data not reported

Other adverse events

Other adverse events
Measure
Part 1/Arm 1 of Study: WRSS1 Vaccine
n=13 participants at risk
WRSS1 is a live attenuated S. sonnei vaccine candidate derived from the Mosely strain of S.sonnei Part 1/Arm 1 of Study: WRSS1 vaccine: Single, oral dose of WRSS1
Part 1/Arm 2: Placebo
n=6 participants at risk
Placebo comparator
Part 2/Arm 1 of Study: S. Sonnei 53G
n=10 participants at risk
10 volunteers from Study Arm 1/Part 1 (WRSS1 vaccine) given 53G S. sonnei
Part 2/Arm 2 of Study: S Sonnei 53G (Controls)
n=10 participants at risk
10 subjects (naïve controls) given S. sonnei 53G
Gastrointestinal disorders
Diarrheic stool
15.4%
2/13 • Number of events 2 • 4 months
66.7%
4/6 • Number of events 4 • 4 months
40.0%
4/10 • Number of events 4 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
Gastrointestinal disorders
Water stool
15.4%
2/13 • Number of events 2 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
60.0%
6/10 • Number of events 6 • 4 months
Gastrointestinal disorders
Abdominal pain
7.7%
1/13 • Number of events 1 • 4 months
33.3%
2/6 • Number of events 2 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Infections and infestations
Conjunctivitis
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Skin and subcutaneous tissue disorders
Dermatitis
7.7%
1/13 • Number of events 1 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Nervous system disorders
Headache
61.5%
8/13 • Number of events 8 • 4 months
33.3%
2/6 • Number of events 2 • 4 months
40.0%
4/10 • Number of events 4 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
Musculoskeletal and connective tissue disorders
Tenderness at digit of left foot
7.7%
1/13 • Number of events 1 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Gastrointestinal disorders
Nausea
7.7%
1/13 • Number of events 1 • 4 months
0.00%
0/6 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Musculoskeletal and connective tissue disorders
Myalgia
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
Immune system disorders
Urticaria
7.7%
1/13 • Number of events 1 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Psychiatric disorders
Insomnia (sleep difficulty)
7.7%
1/13 • Number of events 1 • 4 months
0.00%
0/6 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Respiratory, thoracic and mediastinal disorders
Pharyngitis
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
Injury, poisoning and procedural complications
Abrasion wound at peri-anal
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Reproductive system and breast disorders
Dysmenorrhea
0.00%
0/13 • 4 months
33.3%
2/6 • Number of events 2 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Gastrointestinal disorders
Lower abdominal pain
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Musculoskeletal and connective tissue disorders
Myalgia at back
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
Gastrointestinal disorders
Abdominal pain (epigastrium)
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Respiratory, thoracic and mediastinal disorders
Common cold
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
30.0%
3/10 • Number of events 3 • 4 months
General disorders
Feverish
23.1%
3/13 • Number of events 3 • 4 months
0.00%
0/6 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
30.0%
3/10 • Number of events 3 • 4 months
Skin and subcutaneous tissue disorders
Pruritus at left thigh
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Gastrointestinal disorders
Abdominal pain (generalized)
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Musculoskeletal and connective tissue disorders
Tenesmus
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
General disorders
Malaise
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
30.0%
3/10 • Number of events 3 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
Blood and lymphatic system disorders
Eosinophilia
0.00%
0/13 • 4 months
16.7%
1/6 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
0.00%
0/10 • 4 months
Respiratory, thoracic and mediastinal disorders
Nasal swelling
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
Musculoskeletal and connective tissue disorders
Myalgia at neck
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
Nervous system disorders
Dizziness
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
40.0%
4/10 • Number of events 4 • 4 months
40.0%
4/10 • Number of events 4 • 4 months
Gastrointestinal disorders
Dysentery
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
30.0%
3/10 • Number of events 3 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
General disorders
Fatigue
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
30.0%
3/10 • Number of events 3 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Metabolism and nutrition disorders
Anorexia
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Musculoskeletal and connective tissue disorders
Chills
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
0.00%
0/10 • 4 months
Skin and subcutaneous tissue disorders
Pruritus
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
20.0%
2/10 • Number of events 2 • 4 months
0.00%
0/10 • 4 months
Infections and infestations
Herpes (lip)
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
Gastrointestinal disorders
Abdominal pain (whole)
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Gastrointestinal disorders
Diarrhea
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
0.00%
0/10 • 4 months
Gastrointestinal disorders
Abdominal discomfort
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Investigations
High ALT
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Gastrointestinal disorders
Aphthous
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Injury, poisoning and procedural complications
Tendinitis
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Gastrointestinal disorders
Vomiting
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Gastrointestinal disorders
Increased bowel sound
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Gastrointestinal disorders
Perianal abscess
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Infections and infestations
Shigellosis
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months
Musculoskeletal and connective tissue disorders
Myalgia at right shoulder
0.00%
0/13 • 4 months
0.00%
0/6 • 4 months
0.00%
0/10 • 4 months
10.0%
1/10 • Number of events 1 • 4 months

Additional Information

Punnee Pitisutithum, MBBS, DTM&H, FRCPT

Vaccine Trial Treatment Center, Mahidol University

Phone: 66-2-643-5599

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place